Research has shown that weight loss surgery can benefit obese individuals in ways that go beyond shedding pounds, for example by causing early remission of type 2 diabetes. Now scientists have found that the surgery can also reverse the symptoms of fatty liver disease. The findings, which are to be published online on August 6 in the Cell Press journal Cell Metabolism, are derived from research on liver samples in normal and obese patients—some with fatty liver disease and some without fatty liver disease. The results provide another example of the DNA-altering effects of weight loss surgery.